黒鼠 くろねずみ Also written 黒ねずみ, 黒ネズミ Meanings Noun black mouse; rat with black fur deceitful employee; unfaithful servant dark gray; dark grey Kanji 黒 black. Read as くろ. 鼠 rat; mouse; dark gray. Read as ねずみ. Jinuma: Japanese Dictionary · Word lists